Refrigerating apparatus



March 17, 1931` A. s. BoNNHElM REFRIGERATING APPARATUS Filed April 18. 1927 ual/ Patented Mar. 17, 1931 Ammin n. nommant, or cmeaeo, ILLINoIs marenaarme Armures Application filed Apri! 1B,

My invention relates to what are commonly known, as drink dispensing devices such as are used at soda fountains and other places where soft drinks are dispensed. A In drink di-spensing devices for dispensing various formsV of cold drinks, as heretofore culate constructed, it has been customa to cool the liiuid thusrheld on draft by p acing ice i direct in the li uid. Certain forms of these evices, on the other hand, havehad the cooling accomplished by' passing the liquid through a coi immersed in the cooling brine of alsoda fountain and still further, in some cases, cooling has been attempted by relying on the low temperatures of adJacent refrigerating devices. he type mostly used is where the ice is placed in the liquid. Certain disadvantages are inherent in this form of refrigeration. The melting ice thins the beverage to a point where the taste and consistency are so (greatly altered, thatthe bevera 1s spoile and cannot any longer be sol Bevera e dis sers, moreover, dislike the handling of ice. Provisions must be made to have it available, which is expensive, and which causes considerable anno ance due to the labor involved in caring for t at which constantly melts.,` It is often so disa eeable to have chopped or loose ice about s a fountains, that there vis a tendency today to install iceless fountains, namely, a ty e employin a cooling brine mechanic y cirto produce the desired low temperatures;

With this tendency rapidly growing and the possibility of the absence of ice in the near future from soda fountains, I lind that it is desirable to make some provision for cooling beverages on draft by means other than theI insertion of ice directly into the beverage. Ice in contact with the' bevera often causes too low a temperature, there y separating the beverage. After business hours, the beverage is either allowed to go uniced, or must be drawn olf into acontainer which can fit into one of the compartments of the soda fountain or otherwise placed in a refrigerator.

One of the rincipal objects of the present invention is 1n the provision of a unitary' and' are poor isa?. serial no. masso.

structure which may be used, preferably, in connection with a soda fountain or cabinet, having a cooling brine. which can be circulated to cool the bevera e without brin g the beverage in contact tV erewith. The everage containeris provided with a reentrant portion Aat its base which furnishes a cooling compartment into whichl a coil may be insorted for circulating the brine of the soda fountain, whereby to maintainpthe beverage at a practically even temperature'.

Another vobject of the inventioiis the provision of a motor driven pumpiii 4unit for automatically circulating'the coo 'ng brine through the coil, and s o locatingthe coil that the beverage is never 1n direct contact there-` with. Consequently, there is little possibility of the beverage being at diferent texnperatures in the same container, nor is there possibilit of causin a portion of the beverage'to' reeze in or er to keep the rest sufiiciently cold.

Another advantage to be obtained by not passing the cooling coil through the wall of the container and into theli uid resides in eliminating the problem of eaking joints'. The joints at the coils are difficult to maintaindue to vibration of the coils and the danger of fracturing the glass. On the other Vhand with the coil inserted into theliquid, it is difficult to clean the interior of the container, inasmuch as the latter is permanently -attached to the coil where it enters and hence cannot be removed. The beverage adheres to the coils, causing the formation of a coating which is diicult to remove.

A still further advantage of this arrangement resides in eliminating the difiiculty, which would arise, by taintmg or otherwise rendering the beverag unfit by allowing it to come into contact with the metal coil. Al-

though certain metals could be used, which are noncorrosive, and which would not taint the beverage, lyet such metals are expensive eat conductors and therefore are not considered practical.

It is to be futher remembered that my invention is a decided improvement over the tpe of drink dispensing ap aratus, wherein t e beverageis circulated t rough coils im- 24 which also tends to prevent any accidental displacement of container 18. This container is easily cleaned as it may be lifted upwardly over the coil 27 and taken to a sink where the interior may be thoroughly washed. This is one of the important advantages that the present disclosure obtains over ya structure Where the coil extends through the container into direct contact with' the beverage. With the the coil extending into the tank, it isV impossible to remove the container from its mounting, because the liquid-tight joint at the entrance of the coil Would naturally be destroyed. Moreover, it is exceedingly dif ficult to clean the interior Where the coil is exposed to the beverage because the bever age tends to cling to and form a coating on the coil which is difficult to remove. On ,the other hand, direct contact of the coil in the beverage When the temperature of the liquid falls too low, causes the liquidto freeze on the coil and also reduces the temperature of the liquid to a point Where the solids separate from the liquid.

The average metal in contact with the beverage Will taint the latter and render it unfit for use, Certain metals might be used, however, which are noncorrosive but these metals are relatively costly and are poor heat conductors.

In view of the fact that the starting and stopping of the motor driven pump 19 is periodic and automatically controlled by thermostat 35, provision is made in the form of a visible indicator to indicate the operation of the motor through container 18. A light 40 carried by a socket 41 and secured to a bracket 42 is mounted on coil 27, preferably at the top in the dome 44 of reentrant portion 24. Failure of this light to illuminate periodically will indicate that the motor 20 or the pump has failed, or that the Wiring is broken. In any event,`the light will indicate failure of the device, which would otherivise not be noticed until the beverage loses its low temperature.

It will be understood that my invention is not to be limited to the use of mixed crushed ice and salt as a cooling medium, but may employ the brine of mechanical refrigerators, or any other cooling medium which may be available. On the other hand, I do not intend to be limited to a device having the motor and pump installed in the base,

although this arrangement provides a unitary and compactv structure.

Without further elaboration` the foregoing will so fully explain the gist of my invention, that others may, by applying current knowledge, readily adopt the same for use under varying conditions of service, without eliminating certain features, which may properly be said to constitute the essential items of novelty involved,

tion between said coil and said cooling4 chamber, and means for circulating the refrigerant in'said coolin chamber through said coil to cool the liquids on draft in said container.

2. In a drink dispensing apparatus, the combination in a unitary structure, of a cooling chamber havin a suitable refrigerant therefor, a section for cooling liquids on draft comprising a container, a coil in heat exchanging relation with said container, means for separating the coil from the liquids to prevent contact with the liquids, and means for circulating the refrigerant for said cooling chamber through said coil`to cool the liquids on draft in said container.

3. In a drink dispensing apparatus, the combination, in a unitary structure, of a cooling chamber havin a suitable refrigerant therefor, a section or cooling liquids on draft comprising a container, a cooling coil` in heat exchanging .relation with but separate from said container, and means for circulating the refrigerant of said cooling 4chamber through said coil to cool the liquids on draft in said container.

i 4. In a drink dispensing apparatus, combination, in a unitary structure, of a container for liquids on draft, a base for said container, and a cooling system concealed in said container and base for said liquids including acooling coil in heat exchanging relation with said container and a motor driven pump for .circulating a refrigerant through said coil.

5. In a drink dispensing apparatus, the combination, in a unitary structure, of a container for liquids on draft, a base for said container, a cooling coil in heat exchanging relation with but separate from said container, and a motor driven pumping unit in said base for circulating a refrigerant through said coil.

6. In a drink dispensing apparatus, the combination in a unitary structure, of a container for liquids on draft, a base provided with a seat for said container, said container having a reentrant portion constituting a cooling chamber for the liquids therein, a coil for said cooling chamber, said container being carried on said seat in removable relation with said coil, and refrigerant circulating means in said base for circulating a refrigerant through said coil.

7. In a drink dispensing apparatus, the

the

combination in a unitar structure, of a container for liquids on dra having an upstanding interior-ly projecting extension at the lower end thereof to form an inner cooling chamber for the liquids in said container, said chamber being open at its lower end, and a cooling coil entering sai'd chamber at said open end.

8. A drink dispensin apparatus comprising a container for liqui v'Son draft having an interiorly projecting extension forming a cooling chamber which is open on one end, a coil for said chamber extending into said open end and a thermally controlled motorv driven pump for circulating a refrigerant through said coil.

9.` A drink dispensing apparatus comprising a unitary assembly having a base, a cooling coil, refrigerant Acirculatlng means connected to said coil, and a glass container including. an integrally drawn reentrant portion providin a cooling chamber open at one end adapted or the reception of said cooling coil.

10. A container adapted to receive a beverage for cooling comprising a substantially cylindrical body provided with an inwardly extending, centrally positioned coolingchamber formed by proving an integral reentrant portion at one end of said body.

l1. A drink dispensin apparatus comprising a container for liqui on draft, refrigerating means for cooling the liquid including a cooling coil and a motor driven pump for circulating a refrigerant throu h said coil, and a lamp in the motor circuit or indicating the operation of said motor driven pump.

In witness whereof, I have hereunto subscribed my name.

ARTHUR B. BONNHEIM.

combination in a unitar structure, of a con tainer for liquids on dra t having an upstanding interiorly projecting extension at the lower end thereof to form an inner cooling 5 chamber for the liquids in said container, said ing a container for liqui chamber being open at its lower end, and a cooling coil entering said chamber at said open end.

8. A drink dispensin open end and a thermally controlled motor y driven pump for circulating a refrigerant through said coil.

9. A drink dispensing apparatus comprising a unitar assembly havin a base, a cooling coil, re rigerant Vcirculating means connected to said coil, and a glass container including. an integrally drawn reentrant portion providing a cooling chamber open at one end adapted 'for the reception of said cooling coil.

10. A container adapted to receive a beverage for cooling comprising a substantially cylindrical body provided with an inwardly extending, centrally positioned cooling'chamber formed by proving an integral reentrant 304 portion at one end of said body.

11. A drink dlspensin apparatus comprising a container for liqui on draft, refrigerating means for cooling the liquid including a cooling coil and a motor driven pump for circulating a refrigerant through said coil, and a above numbered patent requiring correction as follows:

lamp in the motor circuit or indicating the operation of said motor driven pump.

In witness whereof, I have hereunto subscribed my name.

ARTHUR B. BONNHEIM.

CERTIFICATE OF CORRECTION.

Patent No. l, 796,916.

Granted' March 17, 1931, to

ARTHUR B. BONNHEIM.

It is hereby certified that error appears in the printed specification of the Page 4, line 29, claim l0, for "proving" read providing; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 14th day of April, A. D. 1931.

(Seal) M. J. Moore, Acting Commissioner of Patents.

CERTIFICATE 0F CORRECTION.

Patent No. 1,796,916. Granted March 17, 1931, to

ARTHUR B. BONNHEIM.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 4, line 29, claim 10, for "proving" read providing; and that the said Letters Patent should be read with this correction therein that the sume may conform to the record of the case in the Patent Office.

Signed and sealed this 14th day of April, A. D. 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

